Frequencies for first 10,000 rows of p10 variable in miper dataset :

        p10 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,446       74.46       74.46
          1 |         28        0.28       74.74
          2 |         58        0.58       75.32
          3 |         64        0.64       75.96
          4 |         55        0.55       76.51
          5 |         55        0.55       77.06
          6 |         69        0.69       77.75
          7 |         70        0.70       78.45
          8 |         74        0.74       79.19
          9 |         89        0.89       80.08
         10 |        109        1.09       81.17
         11 |        118        1.18       82.35
         12 |        103        1.03       83.38
         13 |        107        1.07       84.45
         14 |        104        1.04       85.49
         15 |         90        0.90       86.39
         16 |        102        1.02       87.41
         17 |        122        1.22       88.63
         18 |        114        1.14       89.77
         19 |         99        0.99       90.76
         20 |        103        1.03       91.79
         21 |        120        1.20       92.99
         22 |         92        0.92       93.91
         23 |         94        0.94       94.85
         24 |         64        0.64       95.49
         25 |         70        0.70       96.19
         26 |         51        0.51       96.70
         27 |         58        0.58       97.28
         28 |         48        0.48       97.76
         29 |         33        0.33       98.09
         30 |         36        0.36       98.45
         31 |         23        0.23       98.68
         32 |         20        0.20       98.88
         33 |         17        0.17       99.05
         34 |         16        0.16       99.21
         35 |         16        0.16       99.37
         36 |          8        0.08       99.45
         37 |         12        0.12       99.57
         38 |         13        0.13       99.70
         39 |          5        0.05       99.75
         40 |          5        0.05       99.80
         41 |          2        0.02       99.82
         42 |          3        0.03       99.85
         43 |          4        0.04       99.89
         45 |          1        0.01       99.90
         46 |          1        0.01       99.91
         49 |          1        0.01       99.92
         51 |          3        0.03       99.95
         52 |          1        0.01       99.96
         55 |          1        0.01       99.97
         58 |          1        0.01       99.98
         71 |          1        0.01       99.99
         72 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016